Naslov
Measurement of the Bottom contribution to non-photonic electron production in $p+p$ collisions at $\sqrt{; ; ; s}; ; ; $=200 GeV

Autori
Aggarwal, M.M. ; ... ; Planinić, Mirko ; ... ; Poljak, Nikola ; ...

Izvornik
Physical Review Letters (0031-9007) 105 (2010), 20; 202301-1

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
B; semileptonic decay p p; interaction D; semileptonic decay heavy ion; scattering electron; production electron; yield electron hadron; angular correlation transverse momentum; dependence nuclear matter; effect STAR experimental results Brookhaven RHIC Coll 200 GeV-cms/nucleon

Sažetak
The contribution of $B$ meson decays to non-photonic electrons, which are mainly produced by the semi-leptonic decays of heavy flavor mesons, in $p+p$ collisions at $\sqrt{; ; ; s}; ; ; =$ 200 GeV has been measured using azimuthal correlations between non-photonic electrons and hadrons. The extracted $B$ decay contribution is approximately 50% at a transverse momentum of $p_{; ; ; T}; ; ; \geq 5$ GeV/$c$. These measurements constrain the nuclear modification factor for electrons from $B$ and $D$ meson decays. The result indicates that $B$ meson production in heavy ion collisions is also suppressed at high $p_{; ; ; T}; ; ; $.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

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